Final answer:
The Articles of Confederation did not effectively demonstrate the principle of separation of powers, merging legislative and executive roles into a single entity without a clear distinction between branches, unlike the later U.S. Constitution, which established clear separations and checks and balances.
Step-by-step explanation:
The statement that because the Articles of Confederation created a bicameral legislative branch is incorrect, as the Articles established unicameral legislature and did not illustrate the principle of separation of powers strongly. The Articles of Confederation did not separate the government into distinct branches; instead, it amalgamated the legislative and executive functions into one body, the Congress, failing to establish a separate executive branch or judiciary. Later, the U.S. Constitution was established to create a more structurally defined separation of powers, where the legislative, executive, and judiciary functions were clearly separated into distinct branches, each with their own set of checks and balances that enabled them to work together while preventing any single branch from becoming too powerful.